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Congratulations on your new Soundstream sub-woofer purchase. We 

greatly appreciate your business. This may look like is a run of the mill 

cardboard box, but is actually a protective barrier over one of the finest 

engineered and assembled subwoofer available. 

Harmonic Indulgence… Listen and Feel

series wired

R1-12L

R1-15L

Fs

21.50

23.7

Qms

9.210

13.4

Vas (ft^3)

2.863

4.825

Cms (mm/N)

.220

.14

Mms (g)

249.5

317.2

Rms (kg/s)

3.654

3.52

Xmax (mm)

12.70

12.7

Sd (in^2)

79.16

127.7

Qes

.490

.65

Re

6.80

6.80

Z

8

8

BL (Telsa)

21.60

22.16

RMS Power

800

900

Qts

.418

.620

1w/1m SPL

84.15

86.40

Depth

7.50

8.750

Cutout Dia.

11.125

14.250

Voice Coil

3” DVC 4

3” DVC 4

Reference R1-12 Sealed

Reference R1-15 Sealed

Vol.

Qtc

F3

Vol.

Qtc

F3

Min

1

.690

43

1.5

.870

41

Opt

1.5

.610

41

2

.800

39

Max

2

.570

40

2.5

.750

37

Soundstream does not provide enclosure dimensions as there are 

infinite variables when designing a box, i.e. vehicle, amplifier, music 

preferences, etc… For designs tailored to your specific needs, please 

contact us at [email protected]

All enclosures should be made of .75” (3/4”) material only. When 

possible, make the baffle 1.5” (1 ½) thick and add .75” (3/4”) to the 

depth of the enclosure to compensate. All volumes 

INCLUDE

vent/port and subwoofer displacements. 

DO NOT

change the volume 

unless you plan on adding a substantial amount of bracing. For added 

performance, applying a coat of fiberglass resin to the interior walls 

will greatly improve sealing the enclosure. Adding a thin layer of poly-

fill will improve response by smoothing out reflections within the 

enclosure

24

28

(2) 4x16.5

5

25

31

(2) 4x17.5

4

Max

27

32

(2) 4x15.5

4

26

32

(2) 3x11

3

Opt

30

34

(2) 3x9.5

3

29

34

4x14.5

2

Min

F3

FB

Port

Vol.

F3

FB

Port

Vol.

Reference R1-15 Ported

Reference R1-12 Ported

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